Coexistence of low-K oblate and high-K prolate g9/2 proton-hole bands in 115Sb

Shabir Dar; S. Bhattacharyya; S. Chakraborty; S. Jehangir; Soumik Bhattacharya; G. H. Bhat; J. A. Sheikh; N. Rather; S. S. Nayak; Sneha Das; S. Basu; G. Mukherjee; S. Nandi; R. Banik; S. Basak; C. Bhattacharya; S. Chattopadhyay; S. Das Gupta; A. Karmakar; S. S. Ghugre; D. Kumar; D. Mondal; S. Mukhopadhyay; D. Pandit; S. Rajbanshi; R. Raut

doi:10.1016/j.physletb.2024.138565

Coexistence of low-K oblate and high-K prolate g_9/2 proton-hole bands in ¹¹⁵Sb

Shabir Dar, S. Bhattacharyya, S. Chakraborty, S. Jehangir, Soumik Bhattacharya, G. H. Bhat, J. A. Sheikh, N. Rather, S. S. Nayak, Sneha Das, S. Basu, G. Mukherjee, S. Nandi, R. Banik, S. Basak, C. Bhattacharya, S. Chattopadhyay, S. Das Gupta, A. Karmakar, S. S. GhugreD. Kumar, D. Mondal, S. Mukhopadhyay, D. Pandit, S. Rajbanshi, R. Raut

Research output: Contribution to journal › Article › peer-review

Abstract

A positive parity sequence of ΔI=2 γ transitions has been identified above I^π=9/2⁺ state (E_x=2019 keV) in ¹¹⁵Sb through in-beam γ ray spectroscopic technique. Rotational features of this sequence are found similar to a low-K decoupled band. Observation of this newly identified low-K decoupled band, along with the earlier reported strongly coupled high-K band in this nucleus, provides the first experimental evidence for prolate-oblate shape coexistence associated with g_9/2 proton-hole configuration around Z=50 shell closure. Experimental results are reproduced reasonably well in the frameworks of the projected shell model and the total Routhian surface calculations.

Original language	English
Article number	138565
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	851
DOIs	https://doi.org/10.1016/j.physletb.2024.138565
State	Published - 1 Apr 2024
Externally published	Yes

Keywords

High-K
INGA
Low-K
PSM
Shape coexistence

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/j.physletb.2024.138565

Cite this

Dar, S., Bhattacharyya, S., Chakraborty, S., Jehangir, S., Bhattacharya, S., Bhat, G. H., Sheikh, J. A., Rather, N., Nayak, S. S., Das, S., Basu, S., Mukherjee, G., Nandi, S., Banik, R., Basak, S., Bhattacharya, C., Chattopadhyay, S., Das Gupta, S., Karmakar, A., ... Raut, R. (2024). Coexistence of low-K oblate and high-K prolate g_9/2 proton-hole bands in ¹¹⁵Sb. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 851, Article 138565. https://doi.org/10.1016/j.physletb.2024.138565

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title = "Coexistence of low-K oblate and high-K prolate g9/2 proton-hole bands in 115Sb",

abstract = "A positive parity sequence of ΔI=2 γ transitions has been identified above Iπ=9/2+ state (Ex=2019 keV) in 115Sb through in-beam γ ray spectroscopic technique. Rotational features of this sequence are found similar to a low-K decoupled band. Observation of this newly identified low-K decoupled band, along with the earlier reported strongly coupled high-K band in this nucleus, provides the first experimental evidence for prolate-oblate shape coexistence associated with g9/2 proton-hole configuration around Z=50 shell closure. Experimental results are reproduced reasonably well in the frameworks of the projected shell model and the total Routhian surface calculations.",

keywords = "High-K, INGA, Low-K, PSM, Shape coexistence",

author = "Shabir Dar and S. Bhattacharyya and S. Chakraborty and S. Jehangir and Soumik Bhattacharya and Bhat, {G. H.} and Sheikh, {J. A.} and N. Rather and Nayak, {S. S.} and Sneha Das and S. Basu and G. Mukherjee and S. Nandi and R. Banik and S. Basak and C. Bhattacharya and S. Chattopadhyay and {Das Gupta}, S. and A. Karmakar and Ghugre, {S. S.} and D. Kumar and D. Mondal and S. Mukhopadhyay and D. Pandit and S. Rajbanshi and R. Raut",

note = "Publisher Copyright: {\textcopyright} 2024 The Author(s)",

year = "2024",

month = apr,

day = "1",

doi = "10.1016/j.physletb.2024.138565",

language = "English",

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journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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Dar, S, Bhattacharyya, S, Chakraborty, S, Jehangir, S, Bhattacharya, S, Bhat, GH, Sheikh, JA, Rather, N, Nayak, SS, Das, S, Basu, S, Mukherjee, G, Nandi, S, Banik, R, Basak, S, Bhattacharya, C, Chattopadhyay, S, Das Gupta, S, Karmakar, A, Ghugre, SS, Kumar, D, Mondal, D, Mukhopadhyay, S, Pandit, D, Rajbanshi, S & Raut, R 2024, 'Coexistence of low-K oblate and high-K prolate g_9/2 proton-hole bands in ¹¹⁵Sb', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 851, 138565. https://doi.org/10.1016/j.physletb.2024.138565

TY - JOUR

T1 - Coexistence of low-K oblate and high-K prolate g9/2 proton-hole bands in 115Sb

AU - Dar, Shabir

AU - Bhattacharyya, S.

AU - Chakraborty, S.

AU - Jehangir, S.

AU - Bhattacharya, Soumik

AU - Bhat, G. H.

AU - Sheikh, J. A.

AU - Rather, N.

AU - Nayak, S. S.

AU - Das, Sneha

AU - Basu, S.

AU - Mukherjee, G.

AU - Nandi, S.

AU - Banik, R.

AU - Basak, S.

AU - Bhattacharya, C.

AU - Chattopadhyay, S.

AU - Das Gupta, S.

AU - Karmakar, A.

AU - Ghugre, S. S.

AU - Kumar, D.

AU - Mondal, D.

AU - Mukhopadhyay, S.

AU - Pandit, D.

AU - Rajbanshi, S.

AU - Raut, R.

PY - 2024/4/1

Y1 - 2024/4/1

N2 - A positive parity sequence of ΔI=2 γ transitions has been identified above Iπ=9/2+ state (Ex=2019 keV) in 115Sb through in-beam γ ray spectroscopic technique. Rotational features of this sequence are found similar to a low-K decoupled band. Observation of this newly identified low-K decoupled band, along with the earlier reported strongly coupled high-K band in this nucleus, provides the first experimental evidence for prolate-oblate shape coexistence associated with g9/2 proton-hole configuration around Z=50 shell closure. Experimental results are reproduced reasonably well in the frameworks of the projected shell model and the total Routhian surface calculations.

AB - A positive parity sequence of ΔI=2 γ transitions has been identified above Iπ=9/2+ state (Ex=2019 keV) in 115Sb through in-beam γ ray spectroscopic technique. Rotational features of this sequence are found similar to a low-K decoupled band. Observation of this newly identified low-K decoupled band, along with the earlier reported strongly coupled high-K band in this nucleus, provides the first experimental evidence for prolate-oblate shape coexistence associated with g9/2 proton-hole configuration around Z=50 shell closure. Experimental results are reproduced reasonably well in the frameworks of the projected shell model and the total Routhian surface calculations.

KW - High-K

KW - INGA

KW - Low-K

KW - PSM

KW - Shape coexistence

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U2 - 10.1016/j.physletb.2024.138565

DO - 10.1016/j.physletb.2024.138565

M3 - Article

AN - SCOPUS:85187638852

SN - 0370-2693

VL - 851

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 138565

ER -